1、BRITISH STANDARD AEROSPACE SERIES BS3L81:1985 (Superseding BS2L81) Specification for Sheet and strip of aluminium2! % magnesium alloy (Temper designationH16 orH26) UDC 629.7:669.71572141BS3L81:1985 This BritishStandard, having been prepared under the directionof the Aerospace Standards Committee, wa
2、s published under the authority ofthe Board of BSI and comesintoeffect on 31December1985 BSI 02-2000 The following BSI references relate to the work on this standard: Committee referenceACE/24 Draft for comment81/77624DC ISBN 0 580 14845 9 Committees responsible for this BritishStandard The preparat
3、ion of this BritishStandard was entrusted by the Aerospace Standards Committee(ACE/-) to Technical Committee ACE/24 upon which the following bodies were represented: Aluminium Federation Aluminium Stockholders Association Association of Light Alloy Refiners Limited BNF Metals Technology Centre Briti
4、sh Forging Industry Association British Industrial Fasteners Federation British Investment Casting Trade Association Institute of British Foundrymen Light Metal Founders Association Magnesium Industry Council Ministry of Defence Society of British Aerospace Companies Limited Amendments issued since
5、publication Amd. No. Date of issue CommentsBS3L81:1985 BSI 02-2000 i Contents Page Committees responsible Inside front cover 1 Inspection and testing procedure 1 2 Quality of material 1 3 Chemical composition 1 4 Condition 1 5 Heat treatment 1 6 Mechanical properties 1 Publication referred to Inside
6、 back coverBS3L81:1985 ii BSI 02-2000 NOTE 1Heating material to this specification (e.g.to facilitate bending or forming) may reduce its strength to that of the annealed condition. NOTE 2Other forms of material of the same composition are covered by the following BritishStandards: BSL44, Forging sto
7、ck, bars, extruded sections and forgings. BSL56, Tube (Temper designation 0) (Seamless: tested hydraulically). BSL80, Sheet and strip (Temper designation 0). NOTE 3The chemical composition of this material complies with that registered as International Designation5251. NOTE 4The title of the publica
8、tion referred to in this standard is listed on theinside back cover. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immun
9、ity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the am
10、endment table on the inside front cover.BS3L81:1985 BSI 02-2000 1 1 Inspection and testing procedure This BritishStandard shall be used in conjunction with the relevant sections of the latest issue of BSL100. 2 Quality of material The material shall be made from aluminium of the chemical composition
11、 specified in clause3, with or without approved scrap at the discretion of the manufacturer. 3 Chemical composition The chemical composition of the material shall be: 4 Condition The material shall be supplied cold rolled (temper designationH16) or cold rolled and partially annealed (temper designat
12、ionH26). 5 Heat treatment None. 6 Mechanical properties 6.1 Tensile test. The mechanical properties obtained from test pieces selected and prepared in accordance with the relevant requirements of BSL100 shall be as follows: Element % min. max. Silicon Iron Copper Manganese Magnesium Chromium a Zinc
13、a Titanium Others: each Others: total Aluminium 1.10 1.70 0.40 0.50 0.15 0.50 2.40 0.15 0.15 0.15 0.05 0.15 Remainder a Subject to the discretion of the Quality Assurance Authority, determination of these elements need be made on a small proportion only of the samples analysed. Nominal thickness 0.2
14、% proof stress Tensile strength Elongation on gauge length of50mm min. min. max. min. mm MPa MPa MPa % 0.4 up to and including0.8 Over0.8 up to and including1.3 Over1.3 up to and including6.0 175 175 175 225 225 225 275 275 275 3 4 52 blankBS3L81:1985 BSI 02-2000 Publication referred to BSL100, Proc
15、edure for inspection and testing of wrought aluminium and aluminium alloys. BS3L81:1985 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the i
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